When I ask you to name the technology world's most secretive company, you'd most likely respond with 'Apple'. However, there's one other technology company that, while substantially smaller than the Cupertino giant, is quite possibly even more secretive: Valve.

Tim Cook would not go to Valve HQ to see if Macs can meet a specification. Tim Cook would go to Valve to make a deal with Valve's CEO that is of strategic importance to Apple.

The reason Tim Cook went to Valve is because Apple is building an Apple TV (both of the current variety and an actual TV) where gaming will feature prominently. Apple want's Valve's games on that device but they want their 30%, they want Gamecenter, they want the use the App Store - in other words they don't want Steam.